 | | Re: Mindstorms available in the Netherlands ?
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Mark Overmars wrote in message ... (...) LEGO Benelux always states a much higher price in advance. Actual shop price will probably same as in Germany. Eric (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Chaining multiple RCX's output to input
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While attending Michael Gasperi's workshop at Mindfest it occured to me that, from his investigations, it should be functional and harmless to connect the output of an RCX to the input of another RCX. Last night I connected my RCX to my Scout and it (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: Scout brick and IR
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(...) Which ones? Eric (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: RCX 1.0 availablilty
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(...) Cost. Plain and simple. (26 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: Chaining multiple RCX's output to input
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Eric Brok <brok@fcjsvc.hvu.nl> wrote in message news:FK9Lxs.49z@lugnet.com... (...) more (...) Using a motor as a tachometer has come up before and I used to be worried about this causing damage. I have it from the LEGO engineers I met at mindfest (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Thanks to All!
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I really appreciate all of the great feedback. I've figured out which way I'm going so I'll probably have more specific programming questions in the near future. Luckily for me, I've found an excellent forum for intellectual exchange. Thanks again, (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) That would be nice, actually. I have only one problem with stability - every once in a while, the "Run" key stops working, and all the other keys as well (don't remember exactly, but I think that's how it is). The program keeps running (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | IR questinos and more
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Hi All. I'm trying to build an IR proximity sensor with LegOS, by using the on-board transmitter and light sensor. I'm having problems figuring out how to send data, however. I tried using lnp_logical_write(), but 'cu -l /dev/ttyS0' doesn't show any (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) Following up to myself, but here's the error (kernel/program/.c) lines 255-260: case KEY_ONOFF: // works only if no programs are running. if(nb_tasks<=3) { killall(PRIO_HIGHEST); } return 0; ^^^^ This should be 'break'. The way the code is (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Sonar Sensor
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I'm designing a robot detection/obstacle avoidance system. And I want to install some Sonar sensor. I'm wondering if anyone would know of any good sonar sensor that can easily be used with the HB and that give good results? Any info on this would be (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Interests in non-GNU C compiler for RIS?
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Hello Luis, thanks for respomding (and thanks to others who have email me privately...) (...) We got into the business selling REXIS (REal eXecutive for Intelligent Systems) but stop after a couple years since the support cost is too high :-( I may (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) If ON/OFF is desired while programs run, just drop the if. If ON/OFF isn't to work while programs run, it has to be this: if(nb_tasks<=3) { killall(PRIO_HIGHEST); return 0; // killall doesn't kill self } break; What does standard firmware do? (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | ROBOLAB 2.0 availability
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I just want to apologize to the people who saw ROBOLAB 2.0 on my laptop at Mindfest and then immediately called PITSCO and tried to order it. I tried to tell everyone I spoke to at Mindfest that it wouldn't be available "for a couple of months"... (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Mindfest Panel: Robotics in the Classroom
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My talk (slides and text... no video yet) for the Robotics in the Classroom panel at Minfest this past weekend is at (URL) anyone is interested. -Ben (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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I got this awesome idea: Have you heard of Laserdome? You run around in a dark room and shoot at othe rpeople with lasers. When you get hit, a computer registers it and blah blah. How about building two robots, equip them with a light sensor and a (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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(...) of a (...) Well, some of the cheaper laser pointers do this automatic. The produce a big spot of light when held not too far away from a wall. --Tobias (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | legOS limitation
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Hey, this is a small but frustrating one. This is in legOS 1.7 but I beleive it will still be in 2.0 as it's caused by the 1 priority to a task requirement. If you write code like the following: while(1){ wait(for something); kill(t1); t1 = (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Sonar Sensor
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Try the Polaroid sonar sensors available from (URL) HB site has the info on how to hook it up to the Handy Board including the IC drivers. The Polaroid sonar works very well! Good luck, kam (...) ===...=== Kam Leang University of Utah Department of (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Chaining multiple RCX's output to input
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(...) SNIP (...) One could use four diodes (as a bridge rectifier) between the motor and the input port, and achieve tachometer functionality in both directions, though without direction sense, methinks... Regards, Issac. [Dexter] (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) I'd say this is the way to leave it, since it seems to be how you meant it in the first place. It's just very annoying to take out the batteries if ON/OFF is pressed by mistake while something is running. (...) Don't know, I've never used (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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